乗客にエラーがあります。
VPSでredmineを設定しました。webrickで実行すると、問題なく実行されます。私は以前、乗客がポート80でredmineを実行していました。
パス:usr / local / apache / conf / httpd.conf
 LoadModule passenger_module /usr/lib/ruby/gems/1.8/gems/passenger-3.0.17/ext/apache2/mod_passenger.so
 PassengerRuby /usr/bin/ruby
 PassengerRoot /usr/lib/ruby/gems/1.8/gems/passenger-3.0.17
 PassengerMaxPoolSize 2
 PassengerMaxInstancesPerApp 2
 PassengerPoolIdleTime 100
 <VirtualHost 112.78.6.191:80>
    ServerName projects.gzerone.com
    ServerAlias www.projects.gzerone.com
    DocumentRoot /home/gzerone/public_html/redmine-2.1.2/public
RailsEnv production
     #ErrorLog /usr/local/apache/logs/redmine.error.log
#RackBaseURI /rails
     ServerAdmin webmaster@projects.gzerone.com
     #UseCanonicalName Off
    #CustomLog /usr/local/apache/domlogs/projects.gzerone.com combined
    #CustomLog /usr/local/apache/domlogs/projects.gzerone.com-bytes_log "%{%s}t %I .\n%{%s}t %O ."
     ## User gzerone # Needed for Cpanel::ApacheConf
<Directory /home/gzerone/public_html/redmine-2.1.2/public>
    #AllowOverride all
     Allow from all
    # MultiViews must be turned off.
    Options -MultiViews
</Directory>
<IfModule mod_suphp.c>
    suPHP_UserGroup gzerone gzerone
</IfModule>
<IfModule !mod_disable_suexec.c>
    <IfModule !mod_ruid2.c>
        SuexecUserGroup gzerone gzerone
    </IfModule>
</IfModule>
<IfModule mod_ruid2.c>
    RUidGid gzerone gzerone
</IfModule>
ScriptAlias /cgi-bin/ /home/gzerone/public_html/redmine-2.1.2/public/cgi-bin/
# To customize this VirtualHost use an include file at the following location
# Include "/usr/local/apache/conf/userdata/std/2/gzerone/projects.gzerone.com/*.conf"

apacheのerror_log:
[ pid=23984 thr=23634338875820 file=utils.rb:176 time=2012-11-23 10:39:34.067 ]: *** Exception Errno::ENOMEM in PhusionPassenger::Rack::ApplicationSpawner (Cannot allocate memory - fork(2)) (process 23984, thread #<Thread:0x2afd98bf1358>):
from /usr/lib/ruby/gems/1.8/gems/passenger-3.0.17/lib/phusion_passenger/utils.rb:462:in `fork'
from /usr/lib/ruby/gems/1.8/gems/passenger-3.0.17/lib/phusion_passenger/utils.rb:462:in `safe_fork'
from /usr/lib/ruby/gems/1.8/gems/passenger-3.0.17/lib/phusion_passenger/rack/application_spawner.rb:166:in `handle_spawn_application'
from /usr/lib/ruby/gems/1.8/gems/passenger-3.0.17/lib/phusion_passenger/abstract_server.rb:357:in `__send__'
from /usr/lib/ruby/gems/1.8/gems/passenger-3.0.17/lib/phusion_passenger/abstract_server.rb:357:in `server_main_loop'
from /usr/lib/ruby/gems/1.8/gems/passenger-3.0.17/lib/phusion_passenger/abstract_server.rb:206:in `start_synchronously'
from /usr/lib/ruby/gems/1.8/gems/passenger-3.0.17/lib/phusion_passenger/abstract_server.rb:180:in `start'
from /usr/lib/ruby/gems/1.8/gems/passenger-3.0.17/lib/phusion_passenger/rack/application_spawner.rb:129:in `start'
from /usr/lib/ruby/gems/1.8/gems/passenger-3.0.17/lib/phusion_passenger/spawn_manager.rb:253:in `spawn_rack_application'
from /usr/lib/ruby/gems/1.8/gems/passenger-3.0.17/lib/phusion_passenger/abstract_server_collection.rb:132:in `lookup_or_add'
from /usr/lib/ruby/gems/1.8/gems/passenger-3.0.17/lib/phusion_passenger/spawn_manager.rb:246:in `spawn_rack_application'
from /usr/lib/ruby/gems/1.8/gems/passenger-3.0.17/lib/phusion_passenger/abstract_server_collection.rb:82:in `synchronize'
from /usr/lib/ruby/gems/1.8/gems/passenger-3.0.17/lib/phusion_passenger/abstract_server_collection.rb:79:in `synchronize'
from /usr/lib/ruby/gems/1.8/gems/passenger-3.0.17/lib/phusion_passenger/spawn_manager.rb:244:in `spawn_rack_application'
from /usr/lib/ruby/gems/1.8/gems/passenger-3.0.17/lib/phusion_passenger/spawn_manager.rb:137:in `spawn_application'
from /usr/lib/ruby/gems/1.8/gems/passenger-3.0.17/lib/phusion_passenger/spawn_manager.rb:275:in `handle_spawn_application'
from /usr/lib/ruby/gems/1.8/gems/passenger-3.0.17/lib/phusion_passenger/abstract_server.rb:357:in `__send__'
from /usr/lib/ruby/gems/1.8/gems/passenger-3.0.17/lib/phusion_passenger/abstract_server.rb:357:in `server_main_loop'
from /usr/lib/ruby/gems/1.8/gems/passenger-3.0.17/lib/phusion_passenger/abstract_server.rb:206:in `start_synchronously'
from /usr/lib/ruby/gems/1.8/gems/passenger-3.0.17/helper-scripts/passenger-spawn-server:99
私は願います。あなたはそれを修正するための提案をします。